A free, open source, multi-platform SQLite database manager
Open source PDF editor
A pleasant note-taking platform in native C++
Flexible level editor
Third-party TI-84 Plus CE / TI-83 Premium CE emulator
C++ Qt ORM (Object Relational Mapping) and ODM library
Audio Tag Editor
An integrated writing environment for creating LaTeX documents
Shotcut is a free, open source, cross-platform video editor.
GUI to work with abc notation
Playlist Editor
An Audio/MIDI multi-track sequencer
Graphical editor software for many Boss and Roland effect & synth unit
Real Time Electronic Circuit Simulator.
Final Fantasy VIII Save Editor
Qt based Veroboard, Perfboard, and PCB layout and routing application
Simple XML editor and XSD viewer
View and edit DICOM tags (Windows & Mac & Linux)
2D molecule editor
General purpose tile map editor
a set of utilities for working with Byzantine sheet music